Join in expert discussion on the topics of Astronomy, astrophysics and cosmology. This may include discussion on celestial objects, space, and the physical universe as a whole. Mainstream science only.
Threads
Graduate ASCL.net - Astrophysics Source Code Library
- Astronuc
- · Replies 1 ·
Graduate Requesting help on diagramming the universe
- Hulse
- · Replies 26 ·
Graduate Astonishing Coincidence: Age of Universe in $\Lambda$CDM & Milne Cosmologies
- Garth
- · Replies 4 ·
Graduate Escape velocity of a body from a black hole.
- MathematicalPhysicist
- · Replies 5 ·
Graduate Is the universe a 3D manifold living in 4D space?
- pivoxa15
- · Replies 9 ·
Undergrad Origins of Universe: Chaos & The Big Bang
- Euric
- · Replies 7 ·
Graduate Venusian Rotation: Retrograde & Axial Tilt 178° Explained
- DaveC426913
- · Replies 8 ·
High School Is Alpha Centauri, the closes star to the solar system?
- the Physic freak
- · Replies 13 ·
High School Earth's Rotation: Day & Year Cycles
- Raza
- · Replies 6 ·
High School Is the Universe Really Spherical? And What Lies Beyond?
- Delzac
- · Replies 4 ·
Graduate 'Cyclic universe' can explain cosmological constant
- scott1
- · Replies 2 ·
Graduate Are Trojans possible for other planets besides Jupiter?
- Nereid
- · Replies 9 ·
Graduate Finding Water on the Moon: A Proposal for an Experiment
- CosmologyHobbyist
- · Replies 2 ·
High School What are Some Beginner-Friendly Books on Cosmology and General Relativity?
- Ludovico
- · Replies 15 ·
Undergrad How do they measure the CMB temperature?
- touqra
- · Replies 3 ·
Undergrad Is the existence of life just a series of improbable accidents?
- Dook
- · Replies 5 ·
Stargazing What Can You Capture in the Night Sky with Jupiter, Saturn, and Comet Photos?
- russ_watters
- · Replies 2 ·
Graduate Why is my paper very difficult to be published?
- yuwingsin
- · Replies 13 ·
Graduate Infinitely small and infinitely large
- dak246
- · Replies 1 ·
- Poll
Undergrad Is a Manned Mission to Mars Beneficial for Scientific Advancement?
- wolram
- · Replies 9 ·
Graduate What is the current understanding of the origin of the universe?
- hurk4
- · Replies 9 ·
Graduate Can We Understand Axis Tilts in Planetary Systems?
- marcus
- · Replies 6 ·
Graduate What Caused the Early Universe to Reach 1000 Trillion Degrees Celsius?
- batboy
- · Replies 20 ·
Graduate Mars Mission: Challenges of Sending Humans to Mars
- wolram
- · Replies 12 ·
Graduate Radio Waves emitted by Black Holes
- DeepThunker
- · Replies 2 ·
Graduate Alternative theories about the origin of the universe
- Philippe
- · Replies 25 ·
Undergrad Gravitational slingshotting
- DaveC426913
- · Replies 14 ·
High School Regular Flights to and from Moon: Would You See It?
- MonstersFromTheId
- · Replies 7 ·
Graduate Is the Hubble Constant Constant?
- kmarinas86
- · Replies 6 ·
Graduate Do solar neutrinos really change flavor?
- Michael Mozina
- · Replies 14 ·
Graduate Some questions regarding WIMPs as a DM candidate
- frazzle
- · Replies 57 ·
Graduate Acceleration due to the solar wind
- ptabor
- · Replies 1 ·
Graduate How Does Simultaneity Affect Our Understanding of the Universe's Age?
- cephied
- · Replies 2 ·
Undergrad The Same Plane: Orbits & Galaxies in Our Solar System
- scott_alexsk
- · Replies 1 ·
Graduate Repulsive Gravity & Its Impact on Space Geometry
- flotsam
- · Replies 2 ·
Stargazing Getting Started with Astrophotography: A Beginner's Guide
- Life|Time
- · Replies 6 ·
Graduate Is a Methane-Molecule-Like Solar System Stable?
- neutrino
- · Replies 5 ·
Strike deathray from list of concerns?
- Ivan Seeking
- · Replies 4 ·
Undergrad Why does a star's gravitational force increase when it becomes a black hole?
- jasc15
- · Replies 10 ·
Undergrad Relation Between Areas of Astronomy
- Michael Mozina
- · Replies 18 ·
Graduate Accelerating expansion and the Cosmological Constant
- Royce
- · Replies 13 ·
Graduate Congratulations to Christine on the new paper
- marcus
- · Replies 13 ·
Graduate Orbital Simulation: Estimating Mass from Orbit & Visual Observations
- DaveC426913
- · Replies 11 ·
Undergrad Are we going in a particular direction?
- Silverbackman
- · Replies 2 ·
Undergrad Drake equeation and planet finding
- DaveC426913
- · Replies 23 ·
Undergrad Is the amount of matter in the universe infinite?
- kmbop53
- · Replies 2 ·
Graduate Can the gas model theory explain recent satellite observations?
- Michael Mozina
- · Replies 10 ·
Undergrad Someone want to have fun with asteroid simulation?
- DaveC426913
- · Replies 5 ·
Graduate Driving past your opponent in a space race
- cliowa
- · Replies 9 ·
Graduate Time after big bang we can observe, uncertainty principle
- Finestructure
- · Replies 6 ·
Graduate Inverted Physics: Vacuum is Solid, Matter are Holes
- wolram
- · Replies 7 ·
High School Discover the Fascinating Phenomenon of Northern Lights
- gem0688
- · Replies 21 ·
Undergrad Is Our Sun Part of a Binary Star System?
- ptabor
- · Replies 2 ·
High School Our universe should be called multiverse and not universe
- whiteholes
- · Replies 25 ·
Graduate Can the Cyclic Universe Theory Be Explained Without Superstring Theory?
- MathematicalPhysicist
- · Replies 1 ·
High School Why does the universe look black?
- QuantumTheory
- · Replies 11 ·
Graduate How Do Aliens and Astronomers Measure Time Differently in the Galaxy Paradox?
- japam
- · Replies 2 ·
Graduate Knowing the environment and the creation of the universe
- heartless
- · Replies 6 ·
Undergrad Proving Pluto's Orbit Inside Neptune's - Maths Investigation
- man_united_number_1
- · Replies 1 ·
Graduate Could a Wormhole and Black Holes be Used to Reverse the Big Bang?
- tribdog
- · Replies 5 ·
Graduate Is the Universe a 3D Surface of a 4D Hypersphere?
- Sheyr
- · Replies 14 ·
Graduate Neutrinos, can you explain them to me?
- Chaos' lil bro Order
- · Replies 1 ·
Graduate Occam's Razor and WMAP Anomalies
- wolram
- · Replies 6 ·
Graduate How Do Scientists Measure the Universe's Expansion Rate?
- salhuneidi
- · Replies 21 ·
Graduate Calculating apparent positions of sun and moon
- jamadagni
- · Replies 6 ·
What planets were ancient people able to see in the sky without telescopes?
- scott1
- · Replies 7 ·
Undergrad What distinguishes Pre-main-sequence stars from main sequence stars?
- envanyatar
- · Replies 5 ·
Undergrad Matter vs Anti-Matter: Why Did Matter Dominate Universe?
- wolram
- · Replies 21 ·
High School Sun's Position in Our Solar System
- wolram
- · Replies 9 ·
Graduate Do Celestial Objects Compete for Matter?
- WarrenPlatts
- · Replies 4 ·
Undergrad Distance between earth and moon increasing
- mubashirmansoor
- · Replies 4 ·
UK Moon Sighting: Was the Halo Real or Atmospheric?
- wolram
- · Replies 5 ·
Stargazing Do astronomers at the 3,000 dollar level become degenerates
- batboy
- · Replies 1 ·
High School What Is the Center in Sloan Digital Sky Survey?
- batboy
- · Replies 5 ·
Undergrad Temp of a Comm Satellite in Orbit Around Earth
- MonstersFromTheId
- · Replies 2 ·
Undergrad Why do stars exhibit red shift and blue shift in our universe?
- shaan_aragorn
- · Replies 9 ·
Graduate Tried to understand how we/ our universe came to be
- wolram
- · Replies 6 ·
Graduate Quasar Anomalies: Lack of Time Dilation in Variability
- Chronos
- · Replies 78 ·
High School Sun's Companion Star: Nemesis Theory
- scott1
- · Replies 3 ·
Graduate What is the logical setup that determines the epoch of the CMB?
- kmarinas86
- · Replies 9 ·
Graduate What Are Rosswog's Ideas on the GRB Mechanism?
- marcus
- · Replies 9 ·
Graduate Could all supermassive objects in the center of galaxies be SGR's post mortem?
- kmarinas86
- · Replies 1 ·
Undergrad How to Calculate a Parsec - Tips from Astronomers
- Semaphia
- · Replies 2 ·
Graduate Why Does a(tau) Not Equal af in This Orbital Migration Equation?
- tony873004
- · Replies 1 ·
Graduate How Does Quantum Mechanics Explain the Beginning of the Universe?
- adrian116
- · Replies 3 ·
Graduate The Great Attractor - What Do We Know?
- Chaos' lil bro Order
- · Replies 16 ·
Graduate "Mysterious "Chaos Cloud" Headed Toward Earth"
- Geographer
- · Replies 3 ·
Undergrad Evolving Earth: Solar System Environment Over Time
- wolram
- · Replies 1 ·
High School How many places in the solar system have liquid water?
- dimensionless
- · Replies 7 ·
Undergrad Are White Holes Real or Just a Theoretical Concept?
- ThomasFuhlery
- · Replies 5 ·
Graduate The cycle of life? Fractal orbits and spin.
- Chaos' lil bro Order
- · Replies 2 ·
Graduate Is There a Preferred Lorentz Frame in the CMB?
- DavidK
- · Replies 5 ·
Graduate Debate with my coworker regarding the inflationary theory
- Pavel
- · Replies 5 ·
Graduate Dark Energy's effect on the curvature of space time
- kmarinas86
- · Replies 10 ·
Undergrad Neutron star: heaviest teaspoon of matter
- Vincent Vega
- · Replies 5 ·
Graduate Understanding Strong & Weak Resonance
- tony873004
- · Replies 4 ·
Graduate Does Gravity Violate the Cosmo Speed Limit?
- whiteholes
- · Replies 20 ·
Graduate Will the universe end in a Big Crunch or a Big Rip?
- whiteholes
- · Replies 1 ·
Graduate How Does Black Hole Entropy Increase When Starting with a Pure State?
- touqra
- · Replies 6 ·
Undergrad Interest in blackholes and whiteholes
- whiteholes
- · Replies 4 ·